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Finding the Fourth Proportional to 15,091.40, 22,658.70 and 8,530.40

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Solution

The fourth proportional to 15,091.40, 22,658.70 and 8,530.40 is: 12,807.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,091.40 : 22,658.70 = 8,530.40 : x
  2. Step 2: Convert to fraction form
    15,091.40/22,658.70 = 8,530.40/x
  3. Step 3: Cross multiply
    15,091.40x = 22,658.70 × 8,530.40
  4. Step 4: Simplify right side
    15,091.40x = 193,287,774.48
  5. Step 5: Solve for x
    x = 193,287,774.48/15,091.40
  6. Step 6: Final answer
    x = 12,807.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.